Abstract:
:It has been known for decades that exogenous RNAs are able to induce cytotoxic T lymphocytes (CTLs) and immunological reactivity to a wide variety of antigens. The molecular events responsible for these effects remain unclear for more than two decades. It has been decided to revisit this phenomenon in the light of new concepts that are just emerging in Molecular Biology, such as the regulation of gene expression by noncoding RNAs, named regulatory RNAs. The immunological effects observed in lymphocytes treated with RNAs obtained from lymph nodes of immunized animals with different types of antigens including synthetic peptides of the human immunodeficiency virus type 1 (HIV-1) have been investigated. Our recent results showed that regulatory RNAs are involved in this phenomenon, which is due to the activation of the RNA-dependent protein kinase (PKR) by regulatory RNAs with subsequent activation of the transcription factor NF-kappaB. The RNA-dependent protein kinase (PKR) is a serine/threonine kinase and contains two RNA-binding domains (RBD-I and RBD-II) within the N-terminal region. PKR is activated by viral double-stranded RNA (dsRNA) and highly structured single-stranded RNAs. This review will focus on the structure and functions of PKR including its role in HIV-1 infection. Special emphasis will be placed on a regulatory RNA, named p9-RNA, isolated from lymphocytes of animals immunized with the synthetic peptide p9 (pol: 476-484) of HIV-1. It was found that the regulatory p9-RNA induces CTLs and production of IFN-gamma. These findings showed for the first time that transcriptional control of gene expression by a regulatory RNA can be mediated by PKR through the activation of the transcription factor NF-kappaB. A model for the mechanism of action of the regulatory p9-RNA responsible for the production of IFN-gamma is proposed. Elucidating the molecular mechanism of p9-RNA may contribute to determining the rationale for the use of this regulatory RNA as an immunomodulator in HIV-infected patients.
journal_name
Curr HIV Resjournal_title
Current HIV researchauthors
Watanabe MA,de Souza LR,Murad JM,De Lucca FLdoi
10.2174/157016205774370447keywords:
subject
Has Abstractpub_date
2005-10-01 00:00:00pages
329-37issue
4eissn
1570-162Xissn
1873-4251journal_volume
3pub_type
杂志文章,评审abstract:UNLABELLED:Some deficient genetic polymorphisms of the innate immune system have been correlated to a higher susceptibility to different infections, especially in immunocompromised patients. The possible association between an increased incidence of pneumococcal bacteremia in HIV-infected patients, and deficient polymo...
journal_title:Current HIV research
pub_type: 杂志文章
doi:10.2174/157016209787581382
更新日期:2009-03-01 00:00:00
abstract:PURPOSE:Switch to unboosted atazanavir (ATV) is an attractive option due to convenience and tolerability in HIV-positive patients. With limited available data we investigated the determinants of long-term efficacy and the consequences of virological failure of unboosted atazanavir-based regimens. METHODS:Retrospective...
journal_title:Current HIV research
pub_type: 杂志文章
doi:10.2174/1570162x12666140807151616
更新日期:2014-01-01 00:00:00
abstract:OBJECTIVE:HIV lipodystrophy is characterised by abnormal adipose tissue distribution and metabolism, as a result of altered adipocyte function and gene expression. The protease inhibitor ritonavir is associated with the development of lipodystrophy. Quantifying changes in adipogenic gene expression in the presence of r...
journal_title:Current HIV research
pub_type: 杂志文章
doi:10.2174/1570162x13666150806110238
更新日期:2016-01-01 00:00:00
abstract::The HIV epidemic has resulted in medical, social and economic consequences. There is general agreement that a safe, effective and affordable preventive HIV vaccine is urgently needed to control the epidemic. To date, over 60 phase I/II trials of about 30 candidate vaccines have been conducted worldwide. In 1991, Thail...
journal_title:Current HIV research
pub_type: 杂志文章,评审
doi:10.2174/1570162052772933
更新日期:2005-01-01 00:00:00
abstract:BACKGROUND:Despite intense efforts, AIDS is difficult to tackle by current anti-retroviral therapy (ART) due to its side effects; therefore, there is an urgent need to discover potential, multitarget and low-cost anti-HIV compounds. OBJECTIVE:We have shown that few phytocompounds can potentially inhibit the prime targ...
journal_title:Current HIV research
pub_type: 杂志文章
doi:10.2174/1570162X18666200129112509
更新日期:2020-01-01 00:00:00
abstract:BACKGROUND:HIV-1+ long-term nonprogressors (LTNPs) maintain natural control of viral infection. This study sought to identify and characterize HIV- LTNPs series case, regarding the presence of possible host factors that may be associated with this status. METHODS:We evaluated the plasma levels of IP-10/IL-8 chemokines...
journal_title:Current HIV research
pub_type: 杂志文章
doi:10.2174/1570162X16666171206120024
更新日期:2017-01-01 00:00:00
abstract:OBJECTIVE:There is scarce information about the molecular epidemiology of HIV-infection in Armenia (former USSR). The objective of this work was to estimate the distribution of HIV-1 subtypes in this country and get any information about HIV drug resistance in naÏve patients. DESIGN:A joint study involving 78 patients...
journal_title:Current HIV research
pub_type: 杂志文章
doi:10.2174/1570162x13666150407142834
更新日期:2015-01-01 00:00:00
abstract:OBJECTIVE:The primary objective of this study was to estimate etravirine activity in a cohort of patients infected with non-B subtype HIV-1 and failing nevirapine-based therapy. MATERIALS AND METHODS:Genotypic resistance testing was performed if viral load was >OR= 1,000 copies/ml after receiving at least six months o...
journal_title:Current HIV research
pub_type: 杂志文章
doi:10.2174/157016210791111098
更新日期:2010-04-01 00:00:00
abstract::After the infusion of HIV-1 virus into a host cell, RNA is reverse transcribed to dsDNA, which persists intracellular to the infected cell in a variety of forms. Numerous in-house assays have been developed for the quantification of the different cellular HIV-1 DNA forms; these implement conventional or real-time PCR ...
journal_title:Current HIV research
pub_type: 杂志文章,评审
doi:10.2174/157016209788348001
更新日期:2009-05-01 00:00:00
abstract::Intensive antiretroviral therapy successfully suppresses viral replication but is unable to eradicate the virus. HIV persists in a small number of resting memory T cells where HIV has been transcriptionally silenced. This review will focus on recent insights into the HIV transcriptional control mechanisms that provide...
journal_title:Current HIV research
pub_type: 杂志文章
doi:10.2174/157016211798998736
更新日期:2011-12-01 00:00:00
abstract::The present study assessed the phenotypic aspects of oral-cavity Candida albicans isolates from 300 HIV-1- positive patients, relating the most commonly investigated virulence factors (enzyme typing and germ-tube formation) to the most common morphotypes. The samples were seeded into specific media for isolation and s...
journal_title:Current HIV research
pub_type: 杂志文章
doi:10.2174/1570162x113119990042
更新日期:2013-06-01 00:00:00
abstract::Most of the HIV-infected long term survivors show strong CD8+ cell noncytotoxic antiviral response (CNAR) that plays as an important factor for maintaining the relative healthy state of infected individuals. HIV infected former blood donors (FBDs) in Anhui, China are the unique population that considered infected by t...
journal_title:Current HIV research
pub_type: 杂志文章
doi:10.2174/157016209788680561
更新日期:2009-07-01 00:00:00
abstract::The human immunodeficiency virus (HIV) is unique in its capacity to produce chronic disease in almost all infected hosts. To accomplish this, it has evolved multiple mechanisms to effectively evade the immune response. HIV encodes at least one protein that makes infected cells resistant to CTL killing by downmodulatin...
journal_title:Current HIV research
pub_type: 杂志文章,评审
doi:10.2174/1570162033352138
更新日期:2003-01-01 00:00:00
abstract:BACKGROUND:A vaccine able to elicit broadly neutralizing antibodies capable of blocking infection by global viruses has not been achieved, and remains a key public health challenge. OBJECTIVE:During infection, a robust strain-specific neutralizing response develops in most people, but only a subset of infected people ...
journal_title:Current HIV research
pub_type: 杂志文章,评审
doi:10.2174/1570162X15666171124122044
更新日期:2018-01-01 00:00:00
abstract::AIDS is a globalized infectious disease. In 2014, UNAIDS launched a global project of "90-90-90" to end the HIV epidemic by 2030. The second and third 90 require 90% of HIV-1 infected individuals receiving antiretroviral therapy (ART) and durable virological suppression. However, wide use of ART will greatly increase ...
journal_title:Current HIV research
pub_type: 杂志文章
doi:10.2174/1570162X17666190927154110
更新日期:2019-01-01 00:00:00
abstract:BACKGROUND:Human milk banking has been promoted to provide donated breast milk for at-risk children whose mothers cannot breastfeed them but this effort was hindered by the advent of HIV epidemic. OBJECTIVE:To estimate the seroprevalence of HIV, syphilis and hepatitis B in the blood of human milk donors registered in ...
journal_title:Current HIV research
pub_type: 杂志文章
doi:10.2174/1570162X15666170707143541
更新日期:2017-01-01 00:00:00
abstract:INTRODUCTION:Tuberculosis (TB) is a pandemic infectious disease especially frequent in HIV-infected patients. Toll-like receptor (TLR) 4 has been described to play a main role in the innate immunity against TB. In fact, single nucleotide polymorphisms (SNPs) in TLRs may influence AIDS disease progression. The associati...
journal_title:Current HIV research
pub_type: 杂志文章
doi:10.2174/157016210791111052
更新日期:2010-04-01 00:00:00
abstract::Since the beginning of the AIDS pandemic, and following the discovery of the human immunodeficiency virus (HIV) as the etiological agent of the disease, it was clear that the virus gains access to the human host predominantly through the mucosal tissue after sexual exposure. As a consequence, the female genital tract ...
journal_title:Current HIV research
pub_type: 杂志文章,评审
doi:10.2174/157016212799304689
更新日期:2012-01-01 00:00:00
abstract:BACKGROUND:Genetic variations in Human leukocyte antigen C (HLA-C), Zinc ribbon domain containing 1 (ZNRD1) and its antisense RNA (ZNRD1-AS1) genes are known to influence the HIV-1 replication and disease progression. OBJECTIVE AND METHOD:We evaluated the distribution of HLA-C (rs10484554, rs9264942) and ZNRD1 (rs8321...
journal_title:Current HIV research
pub_type: 杂志文章
doi:10.2174/1570162X15666170511141741
更新日期:2017-01-01 00:00:00
abstract:BACKGROUND:Although HIV and injury contribute substantially to disease burdens in lowand middle-income countries (LMIC), their intersection is poorly characterized. OBJECTIVE:This systematic review assessed the prevalence and associated mortality impact of HIVseropositivity among injured patients in LMIC. METHODS:A s...
journal_title:Current HIV research
pub_type: 杂志文章,meta分析,评审
doi:10.2174/1570162X15666170920112743
更新日期:2017-11-23 00:00:00
abstract::In HIV-1 infected cells, over 40 different mRNA species are produced by alternative splicing of the single HIV-1 primary RNA transcript. In addition, approximately half of the HIV-1 primary RNA transcripts are not spliced and are exported to the cytoplasm where they serve as mRNA and as genomic RNA. In this article, w...
journal_title:Current HIV research
pub_type: 杂志文章,评审
doi:10.2174/157016206775197655
更新日期:2006-01-01 00:00:00
abstract:BACKGROUND:Mother-to-child transmission of HIV-1 occurs in a minority of HIVinfected mother-infant pairs, even without any interventions. The mechanisms that protect the majority of HIV-exposed infants from infection are unclear. T regulatory cells (Treg) have important immunomodulatory functions, but their role in the...
journal_title:Current HIV research
pub_type: 杂志文章
doi:10.2174/1570162X17666190213094624
更新日期:2018-01-01 00:00:00
abstract::To promote the initiation of reverse transcription, the HIV-1 virus uses a host tRNA as a primer, tRNA(3Lys). The annealing of tRNA(3Lys) to the viral RNA requires the breaking of the 3D structure of the tRNA and RNA rearrangements, to form a stable initiation complex recognised by the reverse transcriptase. The annea...
journal_title:Current HIV research
pub_type: 杂志文章,评审
doi:10.2174/1570162053506919
更新日期:2005-04-01 00:00:00
abstract:BACKGROUND:Many HIV research projects are plagued by the high missing rate of selfreported information during data collection. Also, due to the sensitive nature of the HIV research data, privacy protection is always a concern for data sharing in HIV studies. METHODS:This paper applies a data masking approach, called t...
journal_title:Current HIV research
pub_type: 杂志文章
doi:10.2174/1570162x13666151029102539
更新日期:2016-01-01 00:00:00
abstract:BACKGROUND:Non-alcoholic Fatty Liver Disease (NAFLD) is common in HIV-infected individuals. Liver biopsy remains the gold-standard procedure for the diagnosis of liver fibrosis, but both Transient Elastography (TE) and Non-invasive Biomarkers (NIBMs) have emerged as alternatives. OBJECTIVES:Our study's aim was to vali...
journal_title:Current HIV research
pub_type: 杂志文章
doi:10.2174/1570162X17666190809153245
更新日期:2019-01-01 00:00:00
abstract:BACKGROUND:HIV infection induces alterations in the gut-associated lymphoid tissue (GALT) that constitutes the most important site for viral replication due to the extensive presence of effector memory T-cells. In the case of HIV-controllers, several studies have reported fewer peripheral alterations and conserved immu...
journal_title:Current HIV research
pub_type: 杂志文章
doi:10.2174/1570162X17666190130115113
更新日期:2018-01-01 00:00:00
abstract::A major hurdle in the development of a global HIV-1 vaccine is viral diversity. For close to three decades, HIV vaccine development has focused on either the induction of T cell immune responses or antibody responses, and only rarely on both components. After the failure of the STEP trial, the scientific community con...
journal_title:Current HIV research
pub_type: 杂志文章,评审
doi:10.2174/157016210794088290
更新日期:2010-12-01 00:00:00
abstract::The aim of the study was to report the epidemiological profile of HIV-1 positive patients from, Istanbul, Turkey, which has one of the lowest HIV-1/AIDS prevalences in Europe. The patients were followed by ACTHIV-IST group which was established by the Infectious Diseases Departments of five teaching hospitals (three u...
journal_title:Current HIV research
pub_type: 杂志文章
doi:10.2174/1570162x12666140411111803
更新日期:2014-01-01 00:00:00
abstract::Passive immunization studies in non-human primates have established unequivocally that virus neutralization can prevent infection, providing the impetus for current intense efforts to identify immunogens that elicit broadly neutralizing antibodies in humans. Although Fc-mediated effector function may also contribute t...
journal_title:Current HIV research
pub_type: 杂志文章,评审
doi:10.2174/1570162x113116660060
更新日期:2013-07-01 00:00:00
abstract::Hodgkin lymphoma (HL) represents one of the most common types of a non-AIDS-defining tumour that occurs in the HIV population, and its incidence is increasing in the post Highly Active Anti-retroviral Therapy (HAART) era. Despite the aggressiveness of that disease, the outcome of patients with HIV-HL has improved with...
journal_title:Current HIV research
pub_type: 杂志文章,评审
doi:10.2174/157016210790442704
更新日期:2010-03-01 00:00:00